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We need to rein in the destructive power of corporations and billionaires before it's too late. These five ideas would do that, while leaving global capitalism intact. Ultimately, only a complete transformation of our economic system will save our future, but these proposals could set changes in motion that might eventually take us there.

What do all these ideas have in common—a tax on carbon, big investments in renewable energy, a livable minimum wage and freely accessible healthcare? The answer is that we need all of them, but even taken together they're utterly insufficient to redirect humanity away from impending catastrophe and toward a truly flourishing future.